Malicious PDF — malware analysis report

Static analysis result for SHA-256 e98da0b5b7c486df…

MALICIOUS

PDF

32.6 KB Created: 2020-08-30 15:14:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 946ae0d4405616c688a79683ad0a827e SHA-1: 237f89bbfdf68b4ad56d9fc3557ad9e80b5a12cc SHA-256: e98da0b5b7c486df58d24c16fde3933c42942233cc6ba91810d2056821e5ca46
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/wix?keyword=statics+hibbeler+13th+edition+pdf'. This URL is presented within the document body, disguised as a search result for a technical document. The file also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO poisoning tactic. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious content.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/wix?keyword=statics+hibbeler+13th+edition+pdf
    • https://cdn.shopify.com/s/files/1/0432/6660/5211/files/xomedutinolupefizif.pdf
    • https://cdn.shopify.com/s/files/1/0440/7987/4213/files/45588340325.pdf
    • https://cdn.shopify.com/s/files/1/0432/0067/6001/files/adobe_creative_suite_4_mac.pdf
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/linear_equations_worksheets_grade_7.pdf
    • https://cdn.shopify.com/s/files/1/0431/7341/3032/files/mythica_film_streaming_ita.pdf
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/51268557649.pdf
    • https://cdn.shopify.com/s/files/1/0429/4672/3996/files/40928843612.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/33374625424.pdf
    • https://cdn.shopify.com/s/files/1/0431/5961/7690/files/wizurukejidepetajagij.pdf
    • https://cdn.shopify.com/s/files/1/0434/1966/4540/files/85153130183.pdf
    • https://cdn.shopify.com/s/files/1/0429/6222/3263/files/76378111288.pdf
    • https://cdn.shopify.com/s/files/1/0433/9872/5793/files/vezarowajatubez.pdf
    • https://cdn.shopify.com/s/files/1/0428/6952/2599/files/naina_yeh_barse_song.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000040d5.bin
5264b3949449a150318062169dcf9f2676dfb57af68943a6bacc58f05645c0e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x40D5 5704 bytes
font_01_sfnt_off00005426.bin
81f2af0a61ee73d8af5a9f8cb9ef90a813f60c20af960596ef88f0fdfdca26f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5426 9816 bytes

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